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OpenStudy (anonymous):
I fan and give medals!!! A solution of salt and water contains 70 grams of water per 140 milliliters of the solution. If 1 mole of water weighs 16 grams, _____ moles of water would be present in 35 milliliters of the solution. [Round off your answer to two decimal places]
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OpenStudy (anonymous):
Fractions. 70 over 140 = x over 35. 140/35=4 Then, 4*70=280 x=280. 280/16=17.5 moles The answer should be 17.5 moles.
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